Certified by the National Gemstone Testing Center of China (NGTC), one of the most reliable laboratories in Asia, this piece is guaranteed to be completely natural and untreated. NGTC is renowned for its advanced technology and expertise in gemstone testing, ensuring the authenticity of this jade object.  Specifications: Stone type: Natural Nephrite Jade Condition: Excellent Measurements: About 57.3x26.5x18.5mm Weight: 42.16 grams Send the goods together with the base. Remark: Natural. No indication of treatment  Laboratory name: NGTC Report number: ZYTD768691 Report check web link: https://ecard.ngtc.com.cn/page/detail-cer-other?c=ZYTD768691&v=22270656  NGTC is the only accepted Chinese laboratory by Catawiki as it is supervised by the Chinese government. NGTC is a highly reputable lab and it is internationally recognized by GIA and other well-known international labs.  About shipping: By us, you can always rely on careful and reliable shipping. International shipments typically take 9 to 18 days. When you purchase multiple lots, you only pay shipping once, saving you money! Rest assured, if any issues arise with your shipment, we 'll fully reimburse you. We take full responsibility for secure shipping.